Spies like us

Melita Norwood was once described as "the most important British female
agent ever recruited by the KGB". Recruited in 1937 by the NKVD, the
forerunner to the KGB, she spent 40 years photographing documents nad
passing them on to her Soviet controllers, who gave her the codename Hola.
She was only exposed in 1999 when Vaili Mitrokhin, a former KGB archivist,
defected to MI1 in 199 with a large number of files. She died at a West
Midlands nursing home in 2005 at the age of 93.